GSM Technology Concepts and Limitations

The video tutorial explains the evolution of mobile communication from 1G to GSM. It covers the basic architecture of GSM, including its subsystems like the mobile station, base station subsystem, network switching subsystem, and operation support subsystem. The video also details the signal flow in GSM, highlighting the roles of various components such as the mobile switching center, home location register, and visitor location register. The tutorial concludes with a simplified explanation of how a call is processed in the GSM network.

What was the primary limitation of 1G technology?

• It supported only data services.

• It used digital modulation techniques.

• It was introduced in the 1990s.

• It had a limited range and supported only voice services.

Which technology replaced 1G and introduced SIM cards?

• AMPS

• GSM

• CDMA

• LTE

Which frequency bands were used for GSM in India?

• 800 MHz and 1900 MHz

• 900 MHz and 1800 MHz

• 850 MHz and 1700 MHz

• 700 MHz and 2100 MHz

What is the main function of the Mobile Station in GSM architecture?

• To allow users to send and receive calls

• To control multiple BTSs

• To store subscriber information

• To manage call routing and switching

What is the role of the Base Station Controller in the Base Station Subsystem?

• To perform call setup and switching

• To allocate radio channels and manage handovers

• To store subscriber data

• To encrypt and decrypt signals

Which component of the Network Switching Subsystem is considered the heart of GSM?

• Mobile Switching Center

• Visitor Location Register

• Home Location Register

• Authentication Center

What is the purpose of the Equipment Identity Register?

• To authenticate subscribers

• To allocate radio channels

• To store valid handset IMEI numbers

• To manage call routing

What does the Operation Support Subsystem manage in the GSM network?

• Signal encryption and decryption

• Network configuration and maintenance

• Radio channel allocation

• Call setup and switching

How does the GSM system simplify the process of making a call?

• By using analog modulation techniques

• By bypassing the Mobile Switching Center

• By directly connecting to the external network

• By routing signals through the Base Station Subsystem

What happens to the signal at the receiver side in a GSM call?

• It undergoes reverse transmission

• It is transmitted in the same direction

• It is stored in the Home Location Register

• It is encrypted and sent back to the sender